Azad, K. (2011). Math, better explained: Learn to unlock your math intuition. Betterexplained.com.
Benjamin, A., & Shermer, M. (2006). Secrets of mental math, the mathemagician's guide to lightning calculation and amazing math tricks. Three Rivers Press.
McKellar, D. (2009). Math doesn't suck, how to survive middle school math without losing your mind or breaking a nail. Plume Books.
Pickover, C. A. (2009). The math book, from pythagoras to the 57th dimension, 250 milestones in the history of mathematics. (1st ed. ed.). New York: Sterling Pub Co Inc.
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Azad, K. (2011). Math, better explained: Learn to unlock your math intuition. Betterexplained.com.
Benjamin, A., & Shermer, M. (2006). Secrets of mental math, the mathemagician's guide to lightning calculation and amazing math tricks. Three Rivers Press.
McKellar, D. (2009). Math doesn't suck, how to survive middle school math without losing your mind or breaking a nail. Plume Books.
Pickover, C. A. (2009). The math book, from pythagoras to the 57th dimension, 250 milestones in the history of mathematics. (1st ed. ed.). New York: Sterling Pub Co Inc.